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1.
A term used to describe when you are 'chilling' most commonly used by gangsters or hipsters
Bernie:Yo man, wot you doin today?
Cliff:Just sloshin
Bernie:Sounds swell, what even
by Jemmadannyclaire July 11, 2012
 
2.
Whille engaging in sexual activity one or both of the participants are fat,and their belly begins to jiggle/wiggle/slosh(sloshin') around;like waves crashing on the shore.
Although Michael was in very good shape his girlfriend Megan was "SLOSHIN'"
by Tiffny September 13, 2008
 
3.
to lounge, to hang out
What're you up to?

Nothing much, I'm just sloshin around the house.
by miss marilyn monroe December 16, 2008